Wabben b



(No Model.)

Patented June 23, 1885.

DTVENTOR 9%ZJ WITNESSES V WQ/% 7 w ATTORNEYS.

- UNITED STATES PATENT OFFIcE.

WARREN R. TOWNSEND, OF GRAND RAPIDS, MICHIGAN, ASSIGNOR TO HIM- SELF, AND CHARLES S. KNIGHT, OF SAME PLACE.

AUTOMATIC WASTE-VALVE FOR ENGINE-CYLINDERS.

SPECIFICATION forming part Of Letters Patent N0. 320,826, dated June 23, 1885.

Application filed December 18, 1884. (No model.)

To all whom it may concern:

Be it known that I, WARREN R. TOWN- SEND, of Grand Rapids, in the county of Kent and State of Michigan, have invented a new and useful Improvementin Automatic Waste- Valves for Engine-Cylinders, of which the following is a full, clear, and exact description.

The object of my invention is to provide for escape of water from engine-cylinders without the loss of steam incident to the use of the ordinary cylinder-cock; and the invention consists in an automatic valve constructed to be closed by the steam-pressure and to open by a spring when the boiler-pressure is cut off from the cylinder, as hereinafter described and claimed.

Reference is to be had to the accompanying drawing, forming a part of this specification,

which shows my improved valve in longitudinal section.

The body A of the valve is made with a neck, a, for the connection to the engine-cylinder and with 'an outlet, 7), threaded for con- 2 5 nection of awaste-pipe. The valve proper, c, is a disk upon a stem, d, that extends through the screw-cap e loosely. The stem is packed by a gland, k, and carries on its projecting end, between the gland and a nut, f, a spiral 3o spring, 9, that acts to move the stem outward and lift the Valve from its seat. The valve 0 seats at h on the interior of the case above the outlet, and beneath the seat is a crossbar guiding the valve-stem.

Above the valve the stem passes through a tube, 1, that projects 5 from cap 6, which tube serves as a guide and a shield to the stem.

In operation, the device being attached to the cylinder end in place of the usual cock, when steam is admitted to that end of the 0 cylinder it will close valve 0 to its seat and hold it there until the stroke of the piston is completed and the exhaust commences, when the spring 9 instantly opens valve 0, and any water in the cylinder is forced out on the re- 5 turnstroke of the piston. When the engine is at rest, the valve remains wide open, thereby allowing free escape of water. I

It can be readily seen that, by the closing of the valve when the steam pressure is on, the waste of steam ordinarily occurring with cylinder-cocks is avoided, and that the device requires no attention, as it is always operative.

Having thus described myinvention, Iclaim as new and desire to secure by Letters Patent- In a waste-valve, the combination, with the body A, provided with the inlet a and outlet 1) and the valve-stem d, of the cap 0, provided with the tube 45, projecting down into the body and serving as a shield and guard to the valve-stem, substantially as herein shown and described.

\VARREN R. TOWNSEND.

Witnesses:

JOHN W. HoLooMB, CHARLES S. KNIGHT. 

